(transitive) To go into (a cramped space); to barely fit into. / (transitive) To put on (very tight clothes).

To research a particular subject. / To begin eating heartily.

To go hopelessly astray.

(idiomatic) To depart and fade into obscurity.

simple past tense and past participle of plunge into

A partial synonym of plunge in.

past participle of fall into

Third-person singular simple present indicative form of fall into

present participle of fall into

simple past tense of fall